Frozen 2 to be or not to be??

so as the writers of Frozen thought that it would go down in an icy storm and wouldn't be a total hit they decided to think about maybe a Frozen 2 like the first one wasn't enough.

We all know that you cant marry a stranger but wasn't Anna's new love Christoph a stranger I mean like what would they actually put into Frozen 2.Could it be that Anna will get married and tragedy strike's, or maybe a plot twist and Elsa would marry.